VitroBench is a comprehensive test platform involving commercial off-the-shelf (COTS) ECUs that allows arbitrary control over IVN communication. VitroBench allows us to sniff, inject CAN/LIN frames, and isolate targeted ECUs via bridging. This allows us to design and evaluate concrete attacks related to a driving scenario. CAN/LIN Protocol Fuzzing CAN/LIN Frame Injection CAN/LIN Bridging